100115500651 has 4 divisors (see below), whose sum is σ = 102443768152. Its totient is φ = 97787233152.

The previous prime is 100115500643. The next prime is 100115500673. The reversal of 100115500651 is 156005511001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100115500651 - 2³ = 100115500643 is a prime.

It is a super-2 number, since 2×100115500651² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100115500631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164133686 + ... + 1164133771.

It is an arithmetic number, because the mean of its divisors is an integer number (25610942038).

Almost surely, 2^100115500651 is an apocalyptic number.

100115500651 is a deficient number, since it is larger than the sum of its proper divisors (2328267501).

100115500651 is an equidigital number, since it uses as much as digits as its factorization.

100115500651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328267500.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 100115500651 in words is "one hundred billion, one hundred fifteen million, five hundred thousand, six hundred fifty-one".